Top similar games like Sphere Invasion:

Classic RTS gameplay fused with a modern roguelike. Shape your build each run by assembling an evolving arsenal of powerful units and facilities. Harvest resources, build out your base. Raise your army and call down orbital strikes to overcome the forces threatening your survival.

A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.

SpaceFront is a military real-time strategy game. Control Corgis, wage battles, build your army and defend the galaxy from soviet invasion! No game will be the same thanks to procedurally generated campaigns! Join the effort, join the SpaceFront!

The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.

Byte Lynx is a fast-paced RTS with no units. Build defenses, dismantle your enemy, and steal their buildings in this deeply tactical building combat-based strategy game. Expand your arsenal across a series of diverse levels!

Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers!

6 June 1944, the greatest military invasion in human history begins with Allied soldiers landing in Normandy trying to bring an end to the war. You have been given the task of stopping the Allied invasion and defending the German territories in France. Will you be worthy and defend the Fatherland?

Hell of Men: Blood Brothers is a real-time strategy game, developed by one person, in which you will have to collect resources, build your base, train your army by choosing your soldiers wisely and fight.

Grey Galactic is a real time strategy game in space where you build up your planets and ships to conquer your enemies. Develop your planets and fleet of spaceships to destroy your enemies and take over the galaxy! Do you have what it takes to become the best Fleet Captain the UFMC has ever seen?

Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers!

You are the commander of the Black Talons company, currently stationed in the Oberon system. After an eventful campaign, the military Tzanar Union has overrun the planet of Genai and blocked all departure from the system: leaving you and the Black Talons stranded.

Armoured Onslaught is a fast paced Top-Down Shooter and Tower Defence hybrid. You will need to make use of both strategy and skill as you fight your way through near endless hordes of deadly foes.

Terminal squad: swarmites is a game with indirect control where you must erect a chain of buildings, which generate resources for construction or the combat units for destruction of an enemy.

On planets occupied by robots, mine resources and escape while fending off their attacks! The Ark's survival is entirely in your hands. Many elite crews with abilities will assist you in your mission. The various turret modules are always doing their best to defend your base without your attention.

Grimstar is a real-time strategy game with a story-based single-player campaign. Your brother's sudden death has hit you hard, but the laws of the corporation for which he laid down his life dictate that you must take his place until his contract is fulfilled...

Millennium Conflict: a real-time strategy game set in space where you must act fast to stop attackers from conquering your universe. With 40 levels, weapon upgrades, and new generals to recruit, it's up to you as the only surviving male to lead your troops to victory.

With a style inspired by the RTS games from early 2000's, a new tower defense combines in a unique way action, tactics, replay value and fun. They are here! Choose your targets, upgrade, replay, discover your enemies and your tactical skills.

Engineered to Purpose is a new tower defence game where you custom-design towers to defend your base, with millions of builds to explore and refine. Set in the far future, E2P's story of posthumanism, family, and change will open new worlds to explore and survive.

A sci-fi roomscale VR Tower Defense game. Strategize to destroy waves of rogue robots and assist the powerful turrets with a handheld drone. Build and collect resources and help evacuate your crew from the alien planet.

Dive into the strategic depths of "Crystal Nexus: Alien Siege," where the essence of tower defense merges with the ingenuity of deck-building. Operate from a corporate space station, leveraging your wits and a futuristic arsenal to counter a relentless alien threat.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.

An RTS base builder with constant production and minimal micromanagement, where you direct fleets of autonomous ships in huge battles. Features a singleplayer story campaign with 3 playable factions, plus a roguelike gamemode and level editor. Test your abilities in the shifting tides of the Spance.

World order is revolutionary sci-fi real-time strategy, the main feature of which are modular units

Exo TD is a true 3D space Tower Defense. Invaders have scouted your planet as their next target, you must protect it by building destructive turrets, orbital defenses, shields, drones and more to defend against the incoming invasion force.

Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!

Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?

Destroy or be destroyed. Missile Wars is a high-pressure arms race where players must defend their asteroid from enemy missile strikes while investing in crucial tech upgrades to gain the upper hand.

Defend entire planets against hostile invaders in this full 3D tower defense game. Manage resources and space while constructing weapons, defenses, and structures to withstand the destructive onslaught across multiple planets.

Command your carrier ship and lead covert operations against a ruthless enemy in this immersive sci-fi tactical RPG. Send your fighters on missions, loot, upgrade your ships and train new officers and pilots.

Strategic 3D tower defense where you shape the battlefield and economy. Freely place towers to create evolving mazes. Invest in technology and economy to strengthen your defenses against escalating threats. Inspired by classic RTS games, this TD combines strategic depth with dynamic tower placement.

Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.

Hex Defense is a virtual reality tower defense game. Engage in combat defending your base in this inmersive tabletop world. Setup your defenses, manage and modify them according to the situation. There are 6 different biomes to defend, 9 turrets to access, 17 upgrades to be made, and more...

In Tyrium you build a base, collect Tyrium minerals with collector units and convert it to credits in a refinery. Build an army of tanks, rocket launchers, aircraft and infantry units to attack the enemy base and secure map control. Win by destroying the enemy headquarters or all enemy units.